body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}
.form-group {
    margin-bottom: 15px;
}
label {
    display: inline-block;
    width: 100px;
    font-weight: bold;
}
input[type="text"], input[type="number"], input[type="datetime-local"] {
    width: 200px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}
input[type="submit"]:hover {
    background-color: #45a049;
}
.cancel-btn {
    background-color: #f44336 !important;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}
.cancel-btn:hover {
    background-color: #d32f2f !important;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
}
.error {
    color: red;
    margin: 10px 0;
    opacity: 1;
    transition: opacity 1s ease-out;
}
.success {
    color: green;
    margin: 10px 0;
    opacity: 1;
    transition: opacity 1s ease-out;
}

.fade-out {
    opacity: 0;
}